Patents by Inventor Yoshi Hamaguchi

Yoshi Hamaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Thermal printing head
    Patent number: 4034187
    Abstract: A thermal printing head of the planar type which comprises a silicon substrate, a plurality of heat-generating elements provided in the silicon substrate and a heat-insulation layer of silicon dioxide which is provided around each heat-generating element. The heat-insulation layer of silicon dioxide has an excellent heat-insulation characteristic, so that heat which is generated from the heat-generating elements is prevented from flowing to neighboring heat-generating elements whereby distinct patterns can be printed on a thermosensitive paper.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: July 5, 1977
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tatsuyuki Tomioka, Noboru Yukami, Yoshi Hamaguchi, Kiyoharu Yamashita